Hadith.1154 - Mu'adh used to lead prayer in a mosque during the time of the Messenger of Allah (sw) and would make the recitation lengthy. One day, a man passed by while Mu'adh was reciting a long Surah, so the man recited (the prayer) for himself, completed it, and then rode off on his mount. When this incident reached The Prophet (sw), he sent for Mu'adh and said: "O’ Mu'adh, be careful not to be a source of hardship (fitnah). Recite from the shorter Surahs like 'By the sun and its brightness' (Ash-Shams) and similar ones."